Vulnerability Description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the firewall.cgi binary across five request handlers that apply insufficient input validation. Attackers can inject arbitrary shell commands through vulnerable parameters like websURLFilter, websHostFilter, portForward, singlePortForward, and ipportFilter using subshell syntax or unfiltered parameters, with payloads persisting in NVRAM and re-executing on every subsequent firewall.cgi request.
Related Weaknesses (CWE)
References
- https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-as
- https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.
- https://www.vulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-
FAQ
What is CVE-2026-41926?
CVE-2026-41926 is a documented vulnerability. WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the firewall.cgi binary across five request handlers that apply insufficient input validation. ...
How severe is CVE-2026-41926?
CVSS scoring is not yet available for CVE-2026-41926. Check NVD for updates.
Is there a patch for CVE-2026-41926?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.